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2890-38-2

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2890-38-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2890-38-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,8,9 and 0 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 2890-38:
(6*2)+(5*8)+(4*9)+(3*0)+(2*3)+(1*8)=102
102 % 10 = 2
So 2890-38-2 is a valid CAS Registry Number.

2890-38-2Downstream Products

2890-38-2Relevant articles and documents

Wanderungstendenzen cyclischer, polycyclischer und methylverzweigter Alkylreste bei der Beckmann-Umlagerung

Langhals, Heinz,Ruechardt, Christoph

, p. 3831 - 3854 (2007/10/02)

The migration aptitudes of polycyclic bridgehead groups, cycloalkyl groups as well as of β-, γ- and δ-branched alkyl groups in the Chapman variant of the Beckmann rearrangement were determined.From these data it is concluded that at transition state 2 the migrating group is not resembling a planarised carbenium ion R+, but rather a pentacoordinated carbonium ion structure.Because only small geometrical changes occur in the migrating group vertical stabilisation of charge at transition state is believed to have significant influence on the migration aptitudes.

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